lemme tell you a few things about the ISX being as i work at Cummins.
Ceramic plungers- shatter, go thru the oil system take out everything, literally, i have pictures and have seen this many times. i approve engine swings because of this failure.
the coolant usage- 2 things that are very common, EGR cooler of course, the 2nd one is counterbore fretting, the liners are rotating inside the counterbore and taking out the machining marks aka fretting, the first sign would be a blown head gasket, tech measures protrusion and says hey got tilted liners, pull all 6 cut the counterbores and put the new updated liners in it.
oil usage- THE MOST COMMON thing that happens to these things is what is called carbon packing. what happens is carbon will pack inside the ringlands, pushing on the rings, making the rings have full face wear and polishing the liners. Cummins has come out with a reduced diameter piston to fix this issue, however they do re carbon pack every so often.
THE NEW CM2350s since theyve been released, they have issues with the oil pump drive gear cracking. instantanious loss of oil pressure from this, and turbo sector shafts seizing up.
if you guys ever need anything feel free to pm me or call, text i dont care. i do this every day and theres not a whole lot i havent seen on all the engines cummins produces.
Cummins is coming out with a new engine that will not have a DPF and still meets tier 4 emissions. i can help you keep these things on the road if you can hold off a couple years till it comes out. im not releasing any information for my own sake. :blahblah1::blahblah1:
I have a 2012 Kenworth T660 that has(had) a ISX 600hp. I also purchased 450k miles/48mo extended warranty on major components including injectors, turbo, waterpump and dpf system as well. On Sept 28, 2013 I was towed to Wallwork Truck Center in Fargo. They told me the fuel pump gear came apart and went through the fuel system taking out all injectors and Cummins wasn't covering it because it was 254k miles/23mo which amounts to 4k over/ 1mo under the Standard warranty expiry. I was forced to pay $14k and submit to Cummins Policy and was expecting they may cover 90%. They returned 50% less towing.
In the last week of February this year, a bearing turned on the crank. Subsequently, the #4 rod bearing also turned and let go of the rod, scoring the block and I was told went through the top.
Cummins identified pitting on the cam shaft and eroding lobes, called the camshaft assembly the failure point and agreed to pay for only that. This left $25k in additional work to make this engine run again. That is to say if they could've got a block sooner than 5 months. The mechanic found a rebuilt 600hp for $36,000.
At that point, my mechanic asked why the previous repair wasn't covered. He said he also asked the Rapidserve contact why and they didn't want to comment. At his urging, I emailed Western Canada Cummins rep, Robert Freisen, whom I was on the phone with all through the days of the Wallwork repair and never received a satisfactory explanation, who suggested I email Wallwork noting my 48mo warranty and the listing of Fuel Pump Gear (this must distinguish the mechanical from the electrical primer pump and not mean only the gear). They replied that it was the plungers and not the gear and had it been the gear it would have been covered. This was news to me and the first I'd heard of it. Interestingly, the mechanic year down states metal was found throughout but no mention at all of ceramics.
In both of these instances I have never been more astounded at the lack of ethics displayed by Cummins. I paid over $11,000 in extended warranties on this motor and the truck was on the road 28 months. Half the miles on this unit were also run empty as it hauls oversize and overdimensional (overdims are frequently below legal weights. Oil change interims were never over 20,000miles, halfway between Severe and Moderate Cummins maintenance intervals.
I was forced to call the financier and announce it cannot produce revenue as is and the security I provide in the form of extended warranties had failed. I have until months end to convince Cummins to accept responsibility and replace this lemon, at which time the financier will sell it as is, I will be unable to finance a new truck and my livelihood is lost.
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